From: proski <proski@0192ed92-7a03-0410-a25b-9323aeb14dbd>
Date: Sun, 16 Dec 2007 16:40:42 +0000 (+0000)
Subject: Protect against NULL in ath_beacon_config()
X-Git-Url: http://git.ozo.com/?a=commitdiff_plain;h=03538d0225d80dc5915ab69aa7ec8d83ae3eee07;p=madwifi%2F.git

Protect against NULL in ath_beacon_config()

It's called with NULL vap in several places, and the old
ath_beacon_config() had such protection.  Without this check, the kernel
panics after association in managed mode.


git-svn-id: http://madwifi-project.org/svn/madwifi/trunk@3064 0192ed92-7a03-0410-a25b-9323aeb14dbd
---

diff --git a/ath/if_ath.c b/ath/if_ath.c
index 46b8e36..37b9a55 100644
--- a/ath/if_ath.c
+++ b/ath/if_ath.c
@@ -4787,7 +4787,7 @@ ath_beacon_config(struct ath_softc *sc, struct ieee80211vap *vap)
 	struct sk_buff *skb;
 
 	avp = ATH_VAP(vap);
-	if (avp->av_bcbuf == NULL) {
+	if (avp == NULL || avp->av_bcbuf == NULL) {
 		DPRINTF(sc, ATH_DEBUG_ANY, "%s: avp=%p av_bcbuf=%p\n",
 			 __func__, avp, avp != NULL ? avp->av_bcbuf : NULL);
 		return;